Re: [udig-devel] Re: Some questions

[Jody Garnett <jgarnett@xxxxxxxxxxxxxxx>]

Reading:
- http://en.wikipedia.org/wiki/Shapefile
-

I think the shx file is important and is what is used to tie your 
geometry (ie shp) and data (ie dbf) to each other.

Reading (http://en.wikipedia.org/wiki/Shapefile) has the following 
mandatory files:
> Mandatory files :
>
>     * .shp - the file that stores the feature geometry
>     * .shx - the file that stores the index of the feature geometry
>     * .dbf - the database </wiki/Database> of attributes
The spec (http://www.esri.com/library/whitepapers/pdfs/shapefile.pdf) 
confirms it.
> Ok, then another question. If uDig can display shapefiles wthout .shx
> file, may be .shx can be generated somehow? It would be great.
So it appears as if you are honestly missing information. uDig can 
probably show you the raw geometry, but would lack the information 
needed to match the attributes to the geometry.

If you want to guess that they are in the same order you can use the raw 
parts of the Shapefile code to make a program to generate your shx file ...
- http://geotools.codehaus.org/Shapefile+Plugin
- 
http://svn.geotools.org/geotools/trunk/gt/modules/plugin/shapefile/src/main/java/org/geotools/data/shapefile/shp/IndexFile.java
- 
http://svn.geotools.org/geotools/trunk/gt/modules/plugin/shapefile/src/main/java/org/geotools/data/shapefile/dbf/
- 
http://svn.geotools.org/geotools/trunk/gt/modules/plugin/shapefile/src/main/java/org/geotools/data/shapefile/shp/

Bleck,
Jody